5-10pcs 1-13mm HSS M35 Cobalt Twist Drill Bit Set Solid Tungsten Bits For Stainless Steel Aluminum Iron Wood Metal Drill bits

5-10pcs 1-13mm HSS M35 Cobalt Twist Drill Bit Set Solid Tungsten Bits For Stainless Steel Aluminum Iron Wood Metal Drill bits

● M35 cobalt. 5% cobalt added for higher hardness and heat-resitance. The Rockwell hardness is up to 67. It can cut faster and has a long life, up to 12 times compared with the average HSS bit.

● Self centering. The guiding separation point of 135° cutting is self centering, which can penetrate quickly with less pressure. The straight handle can be firmly fixed and accurately centered, which is suitable for standard bit chuck and conventional round chuck.

● Efficient drilling without walking. Remove chips and particleseasier and faster.

● Fully ground. Heavy-duty fully ground body construction for minimal burr and accurate diameter.

Main application:

stainless steel, copper cast iron, galvanized pipe, iron, and aluminum alloy.

Package included: 5/10pcs twist drill bit+plastic package